A. The wings are analogous structures that evolved differently and do not have a similar internal structure.
The general rule followed is that if electronegativity difference is greater than 2, then it is considered an ionic bond. An ionic bond is a type of bond characterizing a transfer of electrons within a bond. Common examples are salts which adds that ionic bonds are common between a metal and a nonmetal. Therefore, the best answer from above is letter B.
I'm pretty sure there are 5 neutrons and 5 protons and all together they make an electron
1 mole of Zn= 65.38 g This is the exact number but you can use 65 as well
1 x 10^-3 mole x 65.38 = 6.538 x 10^-2
an atom will gain or lose electrons to obtain 8 electrons in it's outer shell. In other words, elements want to reach an electron configuration of the nearest noble gas.